After leaving the stomach food enters the duodenum large int

After leaving the stomach, food enters the:

duodenum

large intestine

jejunum

ileum

2 points   

QUESTION 2

If the ileum was removed surgically removed, what would be the most likely effect on digestion?

lipids would not be broken down properly

carbohydrates would not be broken down properly

nutrients would not be absorbed into the blood stream

not enough acid would be produced to help break down proteins

2 points   

QUESTION 3

Which of the following is NOT an ingredient of pancreatic juice?

lipase

hydrochloric acid

amylase

trypsin

2 points   

QUESTION 4

Why does the stomach produce mucus?

to activate enzymes that help to break down carbohydrates

to help break down proteins

to help break down lipids

to protect the stomach lining from hydrochloric acid

2 points   

QUESTION 5

When food descends through the esophagus into the stomach, it is called _________ and moves via the process known as __________.

chyme; ingestion

bolus; ingestion

chyme; peristalsis

bolus; peristalsis

2 points   

QUESTION 6

Which of the following statements about bile is FALSE?

it is produced by the liver

it is stored in the pancreas

it is released into the small intestine

it is used to emulsify lipids

2 points   

QUESTION 7

The organ shown at A produces the enzyme pepsin. This organ is the:

liver

stomach

gall bladder

pancreas

2 points   

QUESTION 8

The organ shown at pointer B produces enzymes which break down fats, carbohydrates, and proteins in the small intestine and also produces a chemical that neutralizes acid. Which organ is this?

liver

stomach

gall bladder

pancreas

2 points   

QUESTION 9

What is the function of the epiglottis?

to prevent food from entering the trachea

to push food down into the pharynx

to help push food around in the mouth before swallowing

none of the above

2 points   

QUESTION 10

Which of the following statements is FALSE?

lipase breaks down fats

chemical digestion of fats and carbohydrates starts in the mouth

the sphincters along the digestive tract control the release of digestive enzymes

blood vessels in the villi absorb all nutrients except fats

		duodenum
		large intestine
		jejunum
		ileum

Solution

1. Duodenum.
After stomach food enter into small intestine. It ha 3 regions. 1. U shaped duodenum 2. Middle Jejunum
3. Ileum.

2. C.

3. HCL. The pancreatic juice contains inactive enzymes – trypsinogen, chymotrypsinogen, procarboxypeptidases, amylases, lipases and nucleases.

4.D Mucus helps in protection of stomach lining from HCL.

5. Bolus and peristalsis. Bolus formed due to mastification of food with saliva in mouth. After that bolus enter into oesophagus then to stomach. And it transfer by peristalic movement.

6. B. Bile stored in gall bladder.

7. Stomach. Stomach has gastric glands. It produces proenzyme pepsinogen by pectic cells. This proenzyme convert to active form has pepsin in stomach.

8. Pancreas - The pancreatic juice contains inactive enzymes – trypsinogen, chymotrypsinogen, procarboxypeptidases, amylases, lipases and nucleases. This gets activated and break down of fats, carbohydrates and proteins take place. Also it produce bicarbonate to make a pH alkaline.

9. A - To prevent food from enter in the trachea.

10. C.

In mouth Amylase present to break down carbohydrates.
Fats are started to break down in mouth.
Fats break down by lipases
In blood vill it absorb all nutrients but fats are absorbed by lacteals.